COPPER (II) COMPLEXES OF A PHTHALIMIDE MANNICH BASE (2-DIMETHYL-AMINOMETHYL)ISOINDOLINE-1,3-DIONE: SYNTHESIS AND SPECTRAL, THERMAL AND ELECTROCHEMICAL STUDIES

Author (s) : M.Mohamed Jaffer Sadiq, S.Brillians Ravin, K.Ramu & R.Elamparithi

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Abstract :
The coordination chemistry of Mannich bases has been a subject of investigation by many researchers. Mannich bases possess a wide range of pharmacological uses viz. antibacterial, antifungal, antimalarial, cytotoxic etc. activities. In the present study the Mannich base 2-(dimethylaminomethyl) isoindoline-1, 3-dione and its complexes with copper (II) have been synthesized and characterized. Their structures have been established on the basis of analytical, magnetic, conductance, IR, electronic and EPR spectral data. 2-(Dimethylaminomethyl)-isoindoline-1, 3-dione (DMID) is found to act as a neutral bi-dentate ligand coordinating to the metal ion through a carbonyl oxygen and tertiary amino nitrogen atoms. The non-electrolytic nature of the complexes is evidenced by their low molar conductance values. On the basis of magnetic moments, electronic and EPR spectral data, the chloro and nitrato CuII complexes are assigned an octahedral stereochemistry. The bromo and sulphato complexes are assigned pseudo tetrahedral geometry. The TG and DTA studies on the chloro and bromo complexes were undertaken. Electrochemical studies on the chloro complex of CuII show a reversible one electron redox process. The peak current ratios ipa/ipc are greater than unity indicating that the electron transfer is not followed by a chemical reaction.

Keywords : Spectral thermal, Electrochemical studies

Conference Date : 17/09/2021

Pages : 200

Paper ID : IESMDT198